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Finding the Fourth Proportional to 714,441.15, 985,940.01 and 392,180.67

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Solution

The fourth proportional to 714,441.15, 985,940.01 and 392,180.67 is: 541,215.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,441.15 : 985,940.01 = 392,180.67 : x
  2. Step 2: Convert to fraction form
    714,441.15/985,940.01 = 392,180.67/x
  3. Step 3: Cross multiply
    714,441.15x = 985,940.01 × 392,180.67
  4. Step 4: Simplify right side
    714,441.15x = 386,666,613,701.61
  5. Step 5: Solve for x
    x = 386,666,613,701.61/714,441.15
  6. Step 6: Final answer
    x = 541,215.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.